Method and system for early Z test in title-based three-dimensional rendering

Inactive Publication Date: 2008-03-20
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0014]The present invention provides a method and system for an early Z test which may elimi

Problems solved by technology

Also, the frame buffer may not be simply embedded in a chip du

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  • Method and system for early Z test in title-based three-dimensional rendering
  • Method and system for early Z test in title-based three-dimensional rendering
  • Method and system for early Z test in title-based three-dimensional rendering

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Embodiment Construction

[0027]Reference will now be made in detail to exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. The exemplary embodiments are described below in order to explain the present invention by referring to the figures.

[0028]FIG. 2 is a diagram illustrating an example of performing a rendering with respect to a triangle, in a tile-based 3D rendering method according to an exemplary embodiment of the present invention.

[0029]According to an exemplary embodiment of the present invention, an early Z test method may perform the rendering with respect to the triangle excluding a second triangle 212 which is covered with a first triangle 211. For this, as illustrated in an example 201 of FIG. 2, when a tile 213 partially including the second triangle 212 is completely included in the first triangle 211, and the second triangle 212 is located behind the first triangl...

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Abstract

A method and system for an early Z test in a tile-based three-dimensional rendering is provided. In the method and system for an early Z test, a portion which is not displayed to a user is removed prior to performing a rasterization process, and thereby performing the 3D rendering efficiently. The method includes segmenting a scene into tiles for performing a rendering with respect to a triangle; selecting a first tile of the tiles, which has a tile Z value less than a minimum Z value of the triangle; and performing the rendering with respect to the triangle in remaining tiles excluding the selected first tile of the tiles.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims priority from Korean Patent Application No. 10-2006-0090058, filed on Sep. 18, 2006, in the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]Methods and systems consistent with the present invention relate to an early Z test in a tile-based three-dimensional rendering, and more particularly, to an early Z test which may perform a rendering with respect to a triangle excluding a unseen portion which is being overlapped by another triangle.[0004]2. Description of Related Art[0005]Currently, as performance of personal terminals develop, providing information using three-dimensional (3D) graphics increases. Although 3D graphics were only used in computer terminals in the past, 3D graphics are currently used in a portable terminal such as a cell phone, a personal digital assistant (PDA), or a navigation ...

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Application Information

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IPC IPC(8): G06T15/40
CPCG06T15/405G06T17/10
Inventor MIN, KYOUNG JUNEKIM, JONG MYONKIM, HEE SEOKKIM, JEONG WOOKKIM, SUK JIN
Owner SAMSUNG ELECTRONICS CO LTD
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